Bump autoprefixer from 9.6.4 to 9.7.1

[dependabot-preview]

Bumps autoprefixer from 9.6.4 to 9.7.1.

Release notes

Sourced from autoprefixer's releases.

9.7.1

• Avoid unnecessary transitions in prefixed selectors (by @​fanich37).
• Fix fit-content for Firefox.

9.7 “Ad Victoriam”

Autoprefixer 9.7 brings AUTOPREFIXER_GRID environment variable and huge performance improvments.

Grid Environment Variable

Autoprefixer can add CSS Grid polyfills for IE. You need to manually enable it to prove that you understand the limits of polyfill.

In previous versions you can enable Grid polyfill by grid: 'autoplace' option or by /* autoprefixer grid: autoplace */ control comment. But in some cases, developers were not able to use both methods. For instance, during work with Material UI’ CSS-in-JS in Create React App.

Now Autoprefixer supports environment variable to enable CSS Grid polyfill:

AUTOPREFIXER_GRID=autoplace npm build

Performance Improvements

@​Knagis found that Browserslist takes 70% of the Autoprefixer time.

We did a lot of improvements in Browserslist and now Autoprefixer should work much faster.

Other

• Fix Cannot read property 'grid' of undefined error

9.6.5

• Fix selector prefixing (by @​fanich37).

Changelog

Sourced from autoprefixer's changelog.

9.7.1

• Avoid unnecessary transitions in prefixed selectors (by Andrey Alexandrov).
• Fix fit-content for Firefox.

9.7 “Ad Victoriam”

• Add AUTOPREFIXER_GRID env variable to enable Grid Layout polyfill for IE.
• Fix Cannot read property 'grid' of undefined error.

9.6.5

• Fix selector prefixing (by Andrey Alexandrov).

Commits

• bf2e89e Release 9.7.1 version
• db0623f Update dependencies
• 5cfde29 Feature/vendor specific transition (#1260)
• 400d48f Update ESLint config
• 89d723c Fix fit-content in Firefox
• 9eb27f0 Revert fit-content fix
• 7869a83 Fix fit-content prefix
• f4553aa Fix typo (#1259)
• 22871d1 Release 9.7 version
• ed1cf68 Update PostCSS
• Additional commits viewable in compare view

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[Pomax]

@dependabot rebase.